An example analysis of Android timer and handler usage _android

This example describes the Android timer and handler usage. Share to everyone for your reference. The specific analysis is as follows:

First, the environment:

Host: WIN8
Development environment: Android Studio

Second, the use of the Timer sample:

Class

Timer 
Private Timer timer_work = new timer ();
Working interval, unit: Ms 
private Final int interval_work = 5000;

To create a timer thread:

/** 
* Constructor/ 
public 
Config () { 
  //Generate configuration Information 
  generate_config_info (); 
  Create a timed thread 
  timer_work.schedule (new Task (), interval_work, interval_work);
  Timed Task 
}

New task:

/** 
* Timer thread timed work * * 
Private class task extends TimerTask {
  @Override public 
  void Run () { 
   Generate_config_info ();
  } 

Three, timer and handler combination work, update UI example (timer thread cannot update UI directly):

Timer Task:

/** 
* Timer thread timed work 
/Private class task extends TimerTask { 
  @Override public 
  void Run () { 
   if (get_ state () = = Enum_state.free) 
   { 
    Connect ("10.58.1.59", 8906); 
   } 
   if (get_state () = = enum_state.connect_success)
   { 
    login ("Tiantian", ""); 
   } 
   if (get_state () = = enum_state.login_success) 
   { 
    enter_room (1, ""); 
   } 
   if (get_state () = = enum_state.enter_room_success) {message: 
    = new Message ();
    Message.what = 1; 
    Handler.sendmessage (message);}} 

Handler Processing information:

Private Handler Handler = new Handler () {public 
  void Handlemessage (msg) {
   switch (msg.what) { 
   
   case 1: 
    { 
     System.out.println ("SDK open video Preparation");
     Video ( -224); 
     break; 
    } 
   } 
   Super.handlemessage (msg); 
  } 
;

The handler and runnable combinations generate threads Sample:

Delay 200ms Call runnable

Handler.postdelayed (runnable, 200);

To generate a thread:

Handler Handler = new Handler (); 
 Runnable Runnable = new Runnable () { 
   
  @Override public 
  void Run () { 
   try { 
    int videobitrate = Anychatsdk.que Ryuserstateint (UserID, anychatdefine.brac_userstate_videobitrate); 
    if (videobitrate > 0) 
    { 
     handler.removecallbacks (runnable); 
     Motherview.setbackgroundcolor (color.transparent); 
    } 
     
    Handler.postdelayed (runnable); 
   catch (Exception e) { 
    e.printstacktrace ();}}} 
;

I hope this article will help you with your Android program.